1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989, 1995 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#include <mach/port.h>
#include <mach/message.h>
#include <mach.h>
#ifdef MACH_MSG_OVERWRITE
/* In variants with this feature, the actual system call is
__mach_msg_overwrite_trap. */
mach_msg_return_t
__mach_msg_trap (mach_msg_header_t *msg,
mach_msg_option_t option,
mach_msg_size_t send_size,
mach_msg_size_t rcv_size,
mach_port_t rcv_name,
mach_msg_timeout_t timeout,
mach_port_t notify)
{
return __mach_msg_overwrite_trap (msg, option, send_size,
rcv_size, rcv_name, timeout, notify,
MACH_MSG_NULL, 0);
}
weak_alias (__mach_msg_trap, mach_msg_trap)
/* See comments below in __mach_msg. */
mach_msg_return_t
__mach_msg_overwrite (mach_msg_header_t *msg,
mach_msg_option_t option,
mach_msg_size_t send_size,
mach_msg_size_t rcv_size,
mach_port_t rcv_name,
mach_msg_timeout_t timeout,
mach_port_t notify,
mach_msg_header_t *rcv_msg,
mach_msg_size_t rcv_msg_size)
{
mach_msg_return_t ret;
/* Consider the following cases:
1. Errors in pseudo-receive (eg, MACH_SEND_INTERRUPTED
plus special bits).
2. Use of MACH_SEND_INTERRUPT/MACH_RCV_INTERRUPT options.
3. RPC calls with interruptions in one/both halves.
*/
ret = __mach_msg_overwrite_trap (msg, option, send_size,
rcv_size, rcv_name, timeout, notify,
rcv_msg, rcv_msg_size);
if (ret == MACH_MSG_SUCCESS)
return MACH_MSG_SUCCESS;
if (!(option & MACH_SEND_INTERRUPT))
while (ret == MACH_SEND_INTERRUPTED)
ret = __mach_msg_overwrite_trap (msg, option, send_size,
rcv_size, rcv_name, timeout, notify,
rcv_msg, rcv_msg_size);
if (!(option & MACH_RCV_INTERRUPT))
while (ret == MACH_RCV_INTERRUPTED)
ret = __mach_msg_overwrite_trap (msg, option & ~MACH_SEND_MSG,
0, rcv_size, rcv_name, timeout, notify,
rcv_msg, rcv_msg_size);
return ret;
}
weak_alias (__mach_msg_overwrite, mach_msg_overwrite)
#endif
mach_msg_return_t
__mach_msg (mach_msg_header_t *msg,
mach_msg_option_t option,
mach_msg_size_t send_size,
mach_msg_size_t rcv_size,
mach_port_t rcv_name,
mach_msg_timeout_t timeout,
mach_port_t notify)
{
mach_msg_return_t ret;
/* Consider the following cases:
1. Errors in pseudo-receive (eg, MACH_SEND_INTERRUPTED
plus special bits).
2. Use of MACH_SEND_INTERRUPT/MACH_RCV_INTERRUPT options.
3. RPC calls with interruptions in one/both halves.
*/
ret = __mach_msg_trap (msg, option, send_size,
rcv_size, rcv_name, timeout, notify);
if (ret == MACH_MSG_SUCCESS)
return MACH_MSG_SUCCESS;
if (!(option & MACH_SEND_INTERRUPT))
while (ret == MACH_SEND_INTERRUPTED)
ret = __mach_msg_trap (msg, option, send_size,
rcv_size, rcv_name, timeout, notify);
if (!(option & MACH_RCV_INTERRUPT))
while (ret == MACH_RCV_INTERRUPTED)
ret = __mach_msg_trap (msg, option & ~MACH_SEND_MSG,
0, rcv_size, rcv_name, timeout, notify);
return ret;
}
weak_alias (__mach_msg, mach_msg)
libc_hidden_def (__mach_msg)
mach_msg_return_t
__mach_msg_send (mach_msg_header_t *msg)
{
return __mach_msg (msg, MACH_SEND_MSG,
msg->msgh_size, 0, MACH_PORT_NULL,
MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
}
weak_alias (__mach_msg_send, mach_msg_send)
mach_msg_return_t
__mach_msg_receive (mach_msg_header_t *msg)
{
return __mach_msg (msg, MACH_RCV_MSG,
0, msg->msgh_size, msg->msgh_local_port,
MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
}
weak_alias (__mach_msg_receive, mach_msg_receive)
|
GitWeb